昌马断裂带地震滑坡的展布特征  

A STUDY ON DISTRIBUTION CHARACTERISTICSOF SESMIC LANDSLIDES ALONG THE CHA NGMA FAULT BELI

作　　者：康来迅[1] 王建荣[1] 

机构地区：[1]国家地震局兰州地质研究所

出　　处：《山地研究》1995年第1期35-41,共7页

基　　金：地质科学联合基金

摘　　要：根据大量的野外地质调查和测量资料分析，讨论了地震滑坡沿昌马断裂带走向和倾向的展布特征。研究认为昌马断裂带地震滑坡主要发生在山坡坡度３０°－５０°的部位和山坡地形高差１００－３００ｍ的部位；地震滑坡规模、数量的分布特征与断裂活动强度的分布变化有密切的关系，这是地震滑坡与降水滑坡、人为滑坡和融冻滑坡的最大区别；最后讨论了地震滑坡最大水平滑距的规律，对地震滑坡灾害预测有很现实的意义。Based on the abundant data of field geological investigation and measurement,the distribu-tion characteristics of trend and tendency of seismic landsiides along the Changma FauIT BeIt werediscussed.The data available indieates the n1ost seismic landslides occurred in the hillslope area,the gradient is between 30°-50° or the aItitude difference is between 100-300m in this area。Their scale,amount and characteristics of distribution closely related with distribution and move-ment in tensity of active fault. Seismic landslide differs greatiy from precipitation landslide,man-made landslide and thaw landslide on dynamic conditions.Lstly,the regularity of maximumhorizontal siiamg distance of seismic landslides is discussed.This research is helpful for predictingseismic landslide disasters.

关 键 词：地震 滑坡 昌马断裂带 滑距 

分 类 号：P642.22[天文地球—工程地质学]